`21.84 div 7`

Answer

To solve the division of 21.84 by 7 step by step, follow these instructions:

### Step 1: Set up the division
We need to divide 21.84 by 7. To do this, we can ignore the decimal point for now and treat it as 2184 divided by 7.

**Hint:** When dividing decimals, it's often easier to first convert the number into a whole number by removing the decimal point.

### Step 2: Divide 2184 by 7
Now, we will divide 2184 by 7.

- Start with the first digit: 7 does not go into 2.
- Move to the first two digits: 7 goes into 21 three times (7 x 3 = 21).
- Write down 3 above the line.

**Hint:** Always check how many times the divisor can fit into the current number you are considering.

### Step 3: Subtract and bring down the next digit
- Subtract 21 from 21, which gives us 0.
- Bring down the next digit, which is 8. Now we have 08.

**Hint:** After subtracting, always bring down the next digit to continue the division.

### Step 4: Divide 8 by 7
Now, we divide 8 by 7.

- 7 goes into 8 one time (7 x 1 = 7).
- Write down 1 above the line.

**Hint:** If the divisor is larger than the current number, you can write 0 and move to the next digit.

### Step 5: Subtract and bring down the next digit
- Subtract 7 from 8, which gives us 1.
- Bring down the next digit, which is 4. Now we have 14.

**Hint:** Always keep track of what you have left after each division step.

### Step 6: Divide 14 by 7
Now, divide 14 by 7.

- 7 goes into 14 two times (7 x 2 = 14).
- Write down 2 above the line.

**Hint:** Remember to multiply back to check your work after each division step.

### Step 7: Combine the results
Now we have 312 from our division. Since we initially ignored the decimal, we need to place it back in the correct position.

### Step 8: Place the decimal point
The original number 21.84 has two decimal places. Therefore, we need to place the decimal point in our answer (312) two places from the right.

So, 312 becomes 3.12.

**Final Answer:** 21.84 divided by 7 equals 3.12.